Primordial black holes from metric preheating: mass fraction in the excursion-set approach

@article{Auclair2020PrimordialBH,
title={Primordial black holes from metric preheating: mass fraction in the excursion-set approach},
author={P. Auclair and V. Vennin},
journal={arXiv: Cosmology and Nongalactic Astrophysics},
year={2020}
}

We calculate the mass distribution of Primordial Black Holes (PBHs) produced during metric preheating. After inflation, the oscillations of the inflaton at the bottom of its potential source a parametric resonant instability for small-scale scalar perturbations, that may collapse into black holes. After reviewing in a pedagogical way different techniques that have been developed in the literature to compute mass distributions of PBHs, we focus on the excursion-set approach. We derive a Volterra… Expand